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发明名称
Screw holding attachment for screwdrivers
摘要
申请公布号
US2960131(A)
申请公布日期
1960.11.15
申请号
US19580739525
申请日期
1958.06.03
申请人
CLARK ROBERT A
发明人
CLARK ROBERT A.
分类号
B25B23/10
主分类号
B25B23/10
代理机构
代理人
主权项
地址
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